The third principle of the Deep Ecology Platform states that richness and diversity of life forms contribute to the realization of values and are values in themselves. The principle is structural, not aesthetic: diverse ecosystems absorb disturbance because they provide a range of responses to environmental challenge; monocultures amplify disturbance because they have no backup strategy. When the single crop fails, the field fails. Cognitive monoculture names the application of this principle to the landscape of AI-mediated thought. When practitioners converge on the same tools and those tools produce output reflecting the statistical central tendencies of their training corpora, the diversity of approaches that characterized the previous era compresses. The output becomes higher-quality on average and less varied. The efficiency is real. The diversity is real. And diversity is not a luxury in a complex system — it is the immune response.
The homogenization is structural rather than intentional. A large language model produces output that